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+import { TopLevelWindow, WebContents, Event, BrowserView, TouchBar } from 'electron';
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+import type { BrowserWindow as BWT } from 'electron';
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+const { BrowserWindow } = process._linkedBinding('electron_browser_window') as { BrowserWindow: typeof BWT };
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+
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+Object.setPrototypeOf(BrowserWindow.prototype, TopLevelWindow.prototype);
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+
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+(BrowserWindow.prototype as any)._init = function (this: BWT) {
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+ // Call parent class's _init.
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+ (TopLevelWindow.prototype as any)._init.call(this);
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+
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+ // Avoid recursive require.
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+ const { app } = require('electron');
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+
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+ const nativeSetBounds = this.setBounds;
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+ this.setBounds = (bounds, ...opts) => {
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+ bounds = {
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+ ...this.getBounds(),
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+ ...bounds
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+ };
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+ nativeSetBounds.call(this, bounds, ...opts);
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+ };
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+
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+ // Sometimes the webContents doesn't get focus when window is shown, so we
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+ // have to force focusing on webContents in this case. The safest way is to
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+ // focus it when we first start to load URL, if we do it earlier it won't
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+ // have effect, if we do it later we might move focus in the page.
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+ //
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+ // Though this hack is only needed on macOS when the app is launched from
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+ // Finder, we still do it on all platforms in case of other bugs we don't
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+ // know.
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+ this.webContents.once('load-url' as any, function (this: WebContents) {
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+ this.focus();
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+ });
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+
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+ // Redirect focus/blur event to app instance too.
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+ this.on('blur', (event: Event) => {
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+ app.emit('browser-window-blur', event, this);
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+ });
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+ this.on('focus', (event: Event) => {
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+ app.emit('browser-window-focus', event, this);
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+ });
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+
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+ // Subscribe to visibilityState changes and pass to renderer process.
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+ let isVisible = this.isVisible() && !this.isMinimized();
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+ const visibilityChanged = () => {
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+ const newState = this.isVisible() && !this.isMinimized();
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+ if (isVisible !== newState) {
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+ isVisible = newState;
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+ const visibilityState = isVisible ? 'visible' : 'hidden';
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+ this.webContents.emit('-window-visibility-change', visibilityState);
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+ }
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+ };
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+
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+ const visibilityEvents = ['show', 'hide', 'minimize', 'maximize', 'restore'];
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+ for (const event of visibilityEvents) {
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+ this.on(event as any, visibilityChanged);
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+ }
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+
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+ // Notify the creation of the window.
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+ const event = process._linkedBinding('electron_browser_event').createEmpty();
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+ app.emit('browser-window-created', event, this);
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+
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+ Object.defineProperty(this, 'devToolsWebContents', {
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+ enumerable: true,
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+ configurable: false,
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+ get () {
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+ return this.webContents.devToolsWebContents;
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+ }
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+ });
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+};
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+
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+const isBrowserWindow = (win: any) => {
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+ return win && win.constructor.name === 'BrowserWindow';
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+};
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+
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+BrowserWindow.fromId = (id: number) => {
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+ const win = TopLevelWindow.fromId(id);
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+ return isBrowserWindow(win) ? win as any as BWT : null;
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+};
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+
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+BrowserWindow.getAllWindows = () => {
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+ return TopLevelWindow.getAllWindows().filter(isBrowserWindow) as any[] as BWT[];
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+};
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+
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+BrowserWindow.getFocusedWindow = () => {
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+ for (const window of BrowserWindow.getAllWindows()) {
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+ if (window.isFocused() || window.isDevToolsFocused()) return window;
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+ }
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+ return null;
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+};
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+
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+BrowserWindow.fromWebContents = (webContents: WebContents) => {
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+ for (const window of BrowserWindow.getAllWindows()) {
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+ if (window.webContents && window.webContents.equal(webContents)) return window;
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+ }
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+
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+ return null;
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+};
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+
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+BrowserWindow.fromBrowserView = (browserView: BrowserView) => {
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+ for (const window of BrowserWindow.getAllWindows()) {
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+ if (window.getBrowserView() === browserView) return window;
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+ }
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+
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+ return null;
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+};
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+
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+BrowserWindow.prototype.setTouchBar = function (touchBar) {
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+ (TouchBar as any)._setOnWindow(touchBar, this);
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+};
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+
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+// Forwarded to webContents:
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+
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+BrowserWindow.prototype.loadURL = function (...args) {
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+ return this.webContents.loadURL(...args);
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+};
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+
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+BrowserWindow.prototype.getURL = function () {
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+ return this.webContents.getURL();
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+};
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+
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+BrowserWindow.prototype.loadFile = function (...args) {
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+ return this.webContents.loadFile(...args);
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+};
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+
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+BrowserWindow.prototype.reload = function (...args) {
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+ return this.webContents.reload(...args);
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+};
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+
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+BrowserWindow.prototype.send = function (...args) {
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+ return this.webContents.send(...args);
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+};
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+
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+BrowserWindow.prototype.openDevTools = function (...args) {
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+ return this.webContents.openDevTools(...args);
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+};
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+
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+BrowserWindow.prototype.closeDevTools = function () {
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+ return this.webContents.closeDevTools();
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+};
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+
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+BrowserWindow.prototype.isDevToolsOpened = function () {
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+ return this.webContents.isDevToolsOpened();
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+};
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+
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+BrowserWindow.prototype.isDevToolsFocused = function () {
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+ return this.webContents.isDevToolsFocused();
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+};
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+
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+BrowserWindow.prototype.toggleDevTools = function () {
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+ return this.webContents.toggleDevTools();
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+};
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+
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+BrowserWindow.prototype.inspectElement = function (...args) {
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+ return this.webContents.inspectElement(...args);
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+};
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+
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+BrowserWindow.prototype.inspectSharedWorker = function () {
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+ return this.webContents.inspectSharedWorker();
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+};
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+
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+BrowserWindow.prototype.inspectServiceWorker = function () {
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+ return this.webContents.inspectServiceWorker();
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+};
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+
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+BrowserWindow.prototype.showDefinitionForSelection = function () {
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+ return this.webContents.showDefinitionForSelection();
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+};
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+
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+BrowserWindow.prototype.capturePage = function (...args) {
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+ return this.webContents.capturePage(...args);
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+};
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+
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+BrowserWindow.prototype.getBackgroundThrottling = function () {
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+ return this.webContents.getBackgroundThrottling();
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+};
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+
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+BrowserWindow.prototype.setBackgroundThrottling = function (allowed: boolean) {
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+ return this.webContents.setBackgroundThrottling(allowed);
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+};
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+
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+module.exports = BrowserWindow;
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Jeremy Rose